(A) if you fail to advertise the highest price in a range of prices for a service or product as prominently as that of the lowest, it
(B) if one fails to advertise the highest price in a range of prices for a service or product as prominently as the lowest price, it
(C) failure to advertise the highest price in a range of prices for a service or product as prominently as the lowest
(D) failure to advertise as prominently the highest price in a range of prices for a service or product as the lowest
(E) failing to advertise as prominently the highest price in a range of prices for a service or products as that of the lowest
Solution:
Pronoun*
A and B can be eliminated for the incorrect usage of it for you and one respectively.
D is awkward due to the usage of to advertise as prominently the highest price
E is wordy due to unnecessary use of that of.
C is the best choice.
Sentence Correction - 1000 Questions with Solution: